Intermittent thread-cutting temple for looms



Aug. 18,1925. v 1,550,392

A. E. Rl-loADEs` INTERMITTENT THREAD'CUTTING TEMPLE FOR LOMS Filed Dec. 24. 1924 2 Sheets-Sheetv 1 ..2 'ao Fi g.

s 4a er lo r v, 'I l IhvenTov.

5S Alongo ERhoodes Aug. 18, 1925V 1,550,392

, A. E. RHOAl-DES INTERMITTENT THREAD CUTTING TEMPLE FOR LOOMS Filed Dec. 24. '1924 2 sheets-sheet 2 Yigg \nvenTor.

A|on3o E. Rhoades Ays.

Patented Aug. 18, 1925.

UNtra!) vsierras Longo nnnoAnns, o'rwrrornnsnn, assTk POETION, or HOBEDALE, Messaorm'snrrs, conse ricerca t s mraanrrrane ananas-onreine non. To ier rca toons.

' xppiicauon area December 24, 1924. serial no. 757,793.

TfoMeZZ /wZL-om t may conce-m:

Boli-t known that I, ALONZO E; Rnoaons,

a citizen of the United States, and a residentiV of Yl-Iopedale,l county of lllorcester, State of Massachusetts havecinvented an Improvement in Intermittent Thread-Cutting Temples for Looms, of which the following defscription in connection withy the accompanyingy drawing; is a specification, like characters on the drawing representing like parts.Y

This invention relates to improvements in intermittently operated temple thread cutters for automatic filling replenis'hing looms andthe object thereof is to provide a novel and' rugged construction for permitting the actuation of the temple thread cutter for a` predetermined period after trans-V fer and thereafter preventing operation of the ktemple thread cutter until transfer is again called for.- Y

. 'n usual Vtypes of looml constructions the temple thread cutter is actuated by or through the movement of the lay during the entire operation of the loom although the outtingbaction of the temple thread cutter is required only immediately after'transfer te, sever the filling ends which extend from the solvage edge of the web of cloth after the exhausted filling carrier has been discharged from the shuttle.. Hence the cutting mechanism is subject toa large amount of unnecessary wear. Means have heretofore been providedfor rendering the operation of the temple thread cutter intermittent so as to act only for short periods after filling replenishment. Such means, howeter have usually been associated with the temple itself and are comparatively small and ofv more or less delicate construction.

By Vthe present invention a rugged construction is provided'which can be readily applied to usual types of temple thread cutting mechanisms. y

A. further object of the intention is to provide a device of this character whichy Other objects and' features of the invention will kmore .fully appear from the following description and the accompanying drawings and will be particularly pointed out in the claims.

Inasmuch as the invention is designed for nother means for changin aresent invention thereto.

in the drawings:

Fig. l is a side'elevation' ofthe mechanism for withdrawing and withholding the templle thread cutter from operative position', showing the temple threadcutter ininop-` erative position; alsoA illustrating the gear ofthev take-up roll, and an arm upon the controller rodA which co-operates with said mechanism and diagrannnatically illustraing the lay in dotted lines in beat-up position;

Fig. 2 is a similar viewshowing the position of the thread cutting temple and the means for controlli-ng thesame in the posi- 'tion'assumed upon Call for transfer;

Fig. 3 is a plan View of the temple stand and temple thread cutter with the present invention applied thereto; also illust-rating a poi-tion ofthe gear of the take-up roll; and, V Fig. i4 is a view showing in cross section" they frictionally' controlled pinion of the retractor and the shaft upon which the pinion is mounted.

The present invention comprises mech'- anism for controlling the action of the temple thread cutter adapted `tobe, associated vwith the 'usual type of filling replenishing loom, such for example as the wellknown Northrop type of loom.

The parts of the loom which are illustra-ted herein comprise a breast beam l, a

klay 2 which is illustrated i-n dotted lines, a

controller rod 3 through which the action of' the filling replenishing mechanism, or the operation of the loom, is initiated an the usual temple 'stand -fwhich may be mounted upon the breast beam in the yusual manner (not shown). A temple arm, lwhich is slidably mounted in the templestand 4 and held in extended position by the usual spring (not shown) is provided with a temple head 6 havinga downwardly extending heelV whichy liesV in the path of the lay and is engaged by it upon each beat-up of the lay. The' parts thus described may beand are ofv the usual construction.

. Any suitable type of thread outtermay be employed in connection with the present invention. The particular temple thread loo cutter illustrated herein is of a usual type comprising a stationary blade or blades 8 which is or are rigidly secured to the temple head and a reciprocating and oscillating movable cutter blade 9 which is slidably mounted in suitable ways in the temple head and provided with a hook-shaped end 10 to engage, and upon reciprocation of the cutter to sever, the filling. The cutting blade 9 has a downwardly extending heel 11 which, in usual constructions, is normally held in advance of the heel 7 of the temple head by a spring 12 the lower end of which is wound about a stud 13 upon the heel 11 and the upper end of which is coiled about a stud 1a and engages a lug 15 upon the temple head in such a manner as to hold the sprino" under tension and cause it normally to tend to force the movable cutting blade 9 into the operative position illustrated `in Fig. 2 so that when the lay beats up 1t will first engage the heels 11 of the movable cutter and during further movement rock the cutter blade so as to force the end 9 downwardly over the filling, and upon further movement will reciprocate the blade and cause the end 10 to force the filling thus engaged against the stationary blade and thereby to sever the filling end. The construction and operation thus described is that of the usual temple thread cutter in which the cutter is actuated upon each beatup of the lay.

The present invention as applied to this type of temple thread cutter permits the use of the same type of cutting blade and the same operation thereof except that means are provided for withdrawing the cutting blade from and maintaining it out of operative position during the normal running of the loom until call for transfer, whereupon the movable cutting blade is rcstored to operative position and continues to function for a suiiicient predetermined period to insure the cutting of the filling end and thereafter withdrawn from and withheld out of operative position until the next call for transfer.

This withdrawal of the cutting blade from operative position is performed by a retracting` device which is connected to the movable blade of the temple thread cutter and is operated by a moving part of the loom, preferably the gear upon the take-up roll in combination with means under the control of the loom changingmechanism.

In the preferred embodiment of the invention illustrated, the retracting device comprises a lever 16 which is pivotally suspended upon a stud 17 upon the end of a lever 18 which is fulcrumed upon a stud 19 extending from a boss which projects upwardly from a plate 20 which is bolted to the usual temple stand. The opposite end Of the lever 18 is provided with a socket 2 1 which is in alignment with a complementary socket in a boss projecting laterally from a plate 20. A helical spring 22 seated in said sockets tends normally to rock the lever 18 in such a manner as to depress the free end from which the retractor 16 is suspended so that its lower end will be acted upon by a moving part of the loom.

The depression of the lever 18 is limited by th engagement of a laterally extending arm 23 on the lever 18, with a cooperating arm or stop 2-1 extending laterally from the plate 20.

The retractor 16 may be connected to the movable cutting blade in any suitable manner. As illustrated, the retractor is provided with a laterally extending stud 25 which is engaged by the U-shaped end 26 of a rod or wire 27, the opposite end of which is coiled about the stud 13 upon the heel 11 of the movable cutter. The U- shaped connection 26 of the rod or wire 27 with the stud 25 upon the retractor permits such loss of motion as may be necessary to accommodate the bodily movement of the temple thread cutter caused by the beat-up of the lay.

The lower end of the retractor is provided with means to engage a moving part of the loom and to move therewith such predetermined distance as is necessary to withdraw the movable cutter blade from operative position while permitting it to remain in operative position such predetermined period as is necessary to insure severance of the filling end which extends from the selvage of the cloth after transfer.

In the preferred embodiment of the invention this device comprises a frictionally controlled pinion 28 the teeth of which are complementary to and adapted to engage the teeth 29 of the usual gear 30 of the takeup roll, the shaft 31 of which is illustrated in section. In the construction illustrated the pinion 28 is rotatably mounted upon the cylindrical reduced portion 32 of a stud shaft having an enlarged stem 33 which fits within a boss projecting laterally from the lower end of the retractor 16, the enlarged stem 33 being secured in said boss by a suitable screw 35 the end of which abuts against the flat face 36 of said stem. The rotation of the pinion 28 desirably is frictionally controlled as by frictional washers 37 and 38 engaging opposite faces of the gear 28 and clamped against the same by other washers 39 and l() engaging respectively a shoulder 11 upon the stud shaft and a clamping nut 42 upon the screw threaded end of the cylindrical portion 32 of the stud shaft. Desirably a locking nut 4-3 is provided to maintain the parts in adjusted position so as to provide the proper amount of frictional resistance to the rotation of the pinion 28,

The upper end of the retractor 16 is provided with a forwardly bent portion 44 having-a lateral extension or lug4`5 adapted to co-operate witha complementary lug. 46 u-pon t-lievlever 18. The: extensions and 46 when in engagement serve to preventl oscillation ofthe retraotor 1%6 beyond a predetermined substantially vertical position and thusy to holdy the retractor in such'l positionthat the: pinion 28 willbe caused properly to engage theteetlr 29 ofv the gear 30 of the take-up roll when the' lever 18 is actuated bythe spring 24v and the retractor supporting end thereof depressed until arrested: byr the` engagement ofl the arm 28 thereof with a stop 24. on the supporting plate which is'secured to the temple stand.

The retractor is actuated to withdraw the movable cutting blade from operative position by a combined vertical and lateral movement. which, i-n the preferredv embodiment oft-he invention, is produced by the cooperation lof the gear 30 of the take-up roll with the pinion 28 and the action of an inclined surface or cam upon a detent which is controlled by the arm of the controller rod. y

Inv the construction illustrated theM retractor is provided with a cam follower which preferably comprises a stud 47 which extends laterally from the side of the ret-ractor 16 and has mounted upon it an antifriction lroll 48. The detent 49 yis in the form of a lever Vwhich is fulcrumedv at its forward end upon a stud 50 extending' laterally from thep'late 20, which is secured to the temple stand 4. The opposite or free end 51 of the. detent desirablyis curved upwardly and then downwardly, the under face ofthe downwardly extending portion presenting an inclinedV or cam surface 52V which is adapted to engage the anti-friction roll 48 of the cam follower upon the retractor 16. The detent 49 is provided intermediate of its ends with a preferably inclined lug 53 having an aperture therethrough: which slidably receives the offset end 54 of ank arm 55 which: is iixedly secured tothe controller rodf 8 by a set screw 56.

ln the. operation ofi the loomthe rotation of the controller rod in the direction .of the arrow illustrated in. Fig. 1 upon call for transfer, or other change in the operation of the loom, swings the arm 55 and its eX- mutable blade oscillateur 'downwardly andr reciprocated rearwardly in such a manner that its hook-shaped end will engage the filling end and in (5o-operation with the stationary blade sever it in the usual manner. Upon its further movement the lay will engage the heel 7 of the temple and force it forwardy in the usual manner, the U- Vshaped connection 26-between the spring 27 and? stud 25 upon the retractor permitting such further movement Without interference with the action of the retractor.

Then the detent 49 is raised by the arm 54 ofthe controller rod as above described`r the spring 22 raises the forward end of the lever `18 thereby depressing the end of said lever from whichthe' retractor 16 is suspended.v As the spring. 12 forces the movable cutter toward its normal kposition the rod or linl 27 tends to draw the lower end ofthe retractor 16 rearwardly, but the eX- tent of such rearward movement is limited by the engagement of the lug 45 on the-offset end 44 of the retractor with the complementary lug 46 upon the lever 18 as illustrated in Fig. 2 so that the retractor. islield in such position that its frictionally' controlled pinion 28 will engage the teeth 29` of the gear ofthe take-up roll. The fric-y tional devices which control the pinion 28 prevent its free rotation so that when the teeth ofthe anti-friction roll 28 are in engagement with the teeth 29 ofthe take-up lroll a dragging action upon the pinion will be produced which will cause the pinion 28 to travel with the periphery of the take-.up gear and, when engaged by the detent hereinafter described, will causethe pinion 28 to Irideup or climb up the gear of the take up roll.V i v After the initiation .of the transferring mechanism the controller rod is restored to its normal position by the usual mechanism (not shown) so that the arm and its extension 54 assume the position illustrated in Fig. As the arm of the controller rod moves from the position illustrated in Fig. 2 to its normal position illustrated in Fig. 1 the detent 49 is swung downwardly so thatit at once' assumes substantiallythe position illustrated in dotted lines in Fig. 2, at whicli'time the retraetor 16 has been fully depressed by the spring actuated lever swung downwardly the cam face of the downwardly extending end portion 52 engages tlie cam follower 48 upon the retractor. As the frictionally controlled pinion 28 is then in engagement with the teeth 29 of the gear SO'of the take-up roll the` retarded rotation `of the pinion 28 caused by the friction imposedupon it will cause the pinion 28 tio move with. and ride up` upon k the periphery ofthe gear of the lll take-up roll, thus moving the retractor upwardly and laterally until such upward movement is limited by the engagement of the bosses upon the lever 18 and temple stand 24 which contain the coil spring 22. lllhen this upward movement of the retractor is ar 1ested further rotation of the gear of the take-up roll will merely revolve the pinion 2S upon its shaft notwithstanding the resistance of the frictional elements which tend to prevent the rotation of the pinion 28.

By reason of this construction, therefore, the upward and lateral movement of the retractor gradually withdraws the cutting blade from its operative position as illustrated in Fig. 2 to the inoperative position illustrated in Fig. l, while continued rotation of the gear of the take-up roll merely imparts rotative movement to the pinion 28 of the retractor. As the rotation of the take-up roll is relatively slow and consequently the retractor 16 is moved slowly, vertically and laterally, from the position illustrated in Fig. 2 to that illustrated in Fig. l, the cutter blade will be held in operative position by its spring'12 until the movable blade has been given a sufficient number of cutting movements to insure the severance of the filling end.

After the movable cutting blade has been withdrawn from operation as above described the actuation of the temple thread cutter will be prevented until a change in the operation of the loom is again called for.

It will be understood that the embodiment of the invention disclosed herein is of an illustrative character, that other types of cutting mechanism may be employed, that various modifications in the means for withdrawing and withholding the cutter from operative position may be made, and that the n'iechanism herein described may be employed in other types of looms than that specilically illustrated and described herein.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

l. In an automatic filling replenishing loom comprising a temple thread cutter operable by or through the movement of the lay and means tending to retain said thread cutter in operative position, a device connected to said thread cutter having means to engage a moving part of the loom and to move bodily therewith a predetermined distance and operable thereby to render the thread cutter inoperative after a predetermined period and means operable by the changing mechanism of the loom normally to hold said means in suoli engagement, but acting upon call for transfer to release th-e same, thereby permitting said thread cutter to be restored to operative position.

2, In an automatic filling 'replenishing loom comprising a temple thread cutter operable by or through the movement of the lay and resilient means tending to retain said thread cutter in operative position, a device connected to said thread cutter having frictionally controlled means to engage and travel a predetermined distance with a rotatable part of the loom and operable thereby to render the thread cutter inoperative after a predetermined period and means operable by the changing mechanism of the loom normally to hold said frictional means in such engagement, but acting upon call for transfer to release the same, thereby permitting said thread cutter to be restored to operative position.

3. In an automatic filling replenishing loom comprising a temple thread cutter 0perable by or through the movement of the lay and resilient means tending to retain said thread cutter in operative position, a device connected to said thread cutter having a frictionally controlled pinion to cngage the gear of the take-up roll and to travel a predetermined distance with the periphery thereof and operable thereby to render the thread cutter inoperative after a predetermined period and means operable by the changing mechanism of the loom normally to hold said pinion in engagement with said gear, but acting upon call for transfer to release the pinion from such engagement and thereby permit the thread cutter to be restored to operative position.

4. In an automatic filling replenishing loom comprising a temple thread cutter having a stationary blade and a movable blade operable by or through the movement of the lay and having means tending to retain said movable blade in operative position, a pivotally and bodily movable retractor connected to said movable blade having a frictionally controlled pinion to engage the gear of the take-up roll and means operable by the transfer-controlling mechanism of the loom upon return to normal position after transfer to cause said pinion to ride up upon the gear of the take-up roll and gradually move said retractor bodily and pivotally a predetermined distance and thereby with.- draw and withhold said movable blade from operative position, said means being operable upon call for transfer temporarily to release said retractor, whereby said movable blade will be returned to operative position.

5. In an automatic filling replenishing loom comprising a temple thread cutter having a stationary blade and a movable blade operable by or through the movement of the lay and having resilient means tending to hold said blade in operative position, a vertically and laterally movable retractor connected to said movable blade and provided with a frictionally controlled pinion adapted to co-operate With the gear 0f the tak@- up roll, resilient means acting upon said retractor to position said pinion in engagement with the gear of the take-up roll, means operable by the changing mechanism of the loom after transfer for causing the pinion when thus engaged to follow the peripheral movement of the gear of the takeup roll a predetermined distance and thereby cause said retractor to withdraw and withhold said movable blade from operative position, said means being operable upon call for transfer to release said retractor, whereby the movable blade will be restored to operative position by said resilient means.

6. In an automatic filling replenishing loom comprising a temple thread cutter having a stationary blade and a movable blade operable by or through the movement of the lay and having resilient means tending to hold said blade in operative position, a retractor lienibly connected to said movabley blade and pivotally suspended at its upper end from a lever fulcrumed upon a stationary part of the loom and provided at its lower end with a frictionally controlled pinion adapted to engage the gear of the take-up roll, means including a spring aeting upon said retractor to cause said pinion to engage said gear, a cam follower on said retractor and a detent having a cam to engage said cam follower and in (5o-operation with the rotation of the gear of the take-up roll gradually to raise said retractor and swing it laterally a predetermined distance and thereby acting to withdraw and withhold said movable blade from operative position and means operable by the changing mechanism of the loom upon calls for transfer to release said cam from said cam follower and acting upon and after call for transfer to cause engagement of said cam with said cam follower.

7. In an automatic filling replenishing loom comprising transferring mechanism including a controller rod, a temple thread cutter having a stationary blade and a ymovable blade operable by or through the movement of the lay and having resilient means tending to hold said blade yin operative position, a vertically and laterally movable retractor connected to said movable yblade and provided with a frictionally controlled pinion adapted tok co-operate with the gear of the take-up roll, a cam follower on said retractor, a pivotally mounted detent having a cam to engage said cam follower, an arm on said controller rod connected to said detent and acting upon rotation of said controller rod upon call for transfer to disengage said detent from said cam follower, thereby permitting the movable blade to be restored to operative position, said arm also acting upon said detent upon rotation of the controller rod to normal position to cause engagement of said detent` with said cam follower, whereby the co-operation of said cam and the rotation of the gear of the takeup roll will raise and swing said retraetor and thereby gradually withdraw said movable blade from operative position.

8.. In an automatic lling replenishing loom comprising transferring mechanismincluding a controller rod, a temple stand, a

temple having a temple thread cutter provided with a movable blade operable by or through the movement of the lay and resilient means tending to hold said movable blade in operative position, a lever pivotally mounted upon saidtemple stand, a retractor pivotally mounted upon the .end of said lever which extendsL toward said temple, a spring acting upon the other end of .said lever tending to depress the retractor-carrying end thereof, a frietionally controlled gear upon the lower end of said retractor adapted to engage the gear of the take-up roll, co-operating means upon said lever and retractor acting upon depression of said retractor bysaid spring to cause said pinion to engage the gear of said take-up roll, means flexibly connecting said retractor to saidv movable blade, a detent pivotally mounted upon said temple stand having` a cam to engage a cam follower upon said retraetor, an arm upon said controller yrod engaging said detent and acting uponfcall for transfer to disengage said detent from` the follower and acting when said controller rod is restored' to normal position to cause engagement of the detent cam with the cam follower, whereby the pinion will be caused to move upwardly and laterally with the periphery of the gear of the take-up roll and thereby gradually withdraw and withhold said movable blade from operative position.

In testimony whereof, I have signed my name to this specification.

ALONZO E. RHOADES. 

